They’re digitigrade legs; the ankle is halfway between the knee and the ball of the foot. It is a little off-putting, though, that the implied resting positions of this design don’t hold true in panel 4, though.

I think Grayfeline is revering to Kade’s leg going sideways at the knee. A knee should not be able to do that. The closest you can get to that position is twisting your leg outward at the hip, but it only goes 45 degrees. Not the dislocating 90 degrees Kade is doing.

“Kade bites me” implies it’s an event that has happened more than once and will likely happen again. “Kade is biting me” implies that it’s still occurring. “Kade bit me” implies that it was a single event.

You know, most fun from backseat videogaming is giving bad advice that is a lot of fun. Like in BotW, recommending climbing onto an object that has been Stasis pummel-charged. Or casually forgetting where Lynels are when giving directions to places. Or mentioning the Forgotten Temple when they have no ability to reflect Guardian blasts (Without mentioning said Guardians being there, natch).
There is a reason comedies sometimes have blooper reels; it is funny watching others screw up.